On November 11, 1991, federal prosecutors announced that Sammy Gravano would later testify against john Gotti and other high-ranking mobsters in exchange for a reduced sentence. John Gotti received a sentence of life imprisonment. As part of Gravano's cooperation agreement, he would never be forced to testify against his former crew. On September 26, 1994, a federal judge sentenced Gravano to five years in prison. However, since Gravano had already served four years, the sentence amounted to less than one year.